摘要
沉积物或动物化石中的总有机碳同位素组成记录了当时生态植被状况及气候环境信息,对有机碳同位素指标的研究可解译其蕴含的地质历史时期气候和构造事件及变化特征、定量重建古生态系统中植被结构、推断C_4植物的起源、扩张等,应用甚为广泛。本文主要概述了总有机碳同位素在古环境研究中应用的基本原理,介绍了在各类载体中获取其数据的实验方法步骤,对其在古环境研究中的地位与作用以例证说明,展示其应用的大好前景。
Change of geological historical vegetation and climate are recorded by organic carbon isotopic composition （δ^13C value） of sediments and animal fossils. The δ^13C value, as a paleoenvironment proxy, is widely used in such studies as revealing climatic and tectonic events and their variations in geological history, quantitative reconstructing paleoecosystem vegetation structure, inferring the time and mechanism of C4 plants origin and expansion. This paper outlines theory about the application of δ^13C value in paleoenvironmental research and introduces the experimental methods that how to get δ^13C value data from various organic carbon carriers. Besides, examples are illustrated in this paper to show its indispensable function and excellent prospect in paleoenviruomental study.
出处
《地球环境学报》
CSCD
2013年第6期1519-1530,共12页
Journal of Earth Environment
基金
国家重大科学研究计划(2013CB956400)
中国科学院战略性先导科技专项(XDB03020103)
自然科学基金项目(41272184)
关键词
有机碳同位素
C4型植物
古环境研究
应用
organic carbon isotope
C4 plants
paleoenvironmental research
application
